#337BC3#337BC3

#337BC3 is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.3% C 0.132 H 251.3°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#337BC3
RGB	rgb(51, 123, 195)
HSL	hsl(210, 59%, 48%)
HSV	hsv(210, 74%, 76%)
CMYK	cmyk(73.8%, 36.9%, 0%, 23.5%)
CIE-LAB	lab(50.46, 2.22, -44.00)
CIE-LCH	lch(50.46, 44.06, 272.89°)
OKLab	oklab(57.28% -0.0424 -0.1253)
OKLCH	oklch(57.28% 0.132 251.3)
XYZ	xyz(18.2948, 18.8078, 54.2853)
Luminance	0.1881 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BC3 #C37B33

analogous

#33C3C3 #337BC3 #3333C3

triadic

#337BC3 #C3337B #7BC333

tetradic

#337BC3 #C333C3 #C37B33 #33C333

square

#337BC3 #C333C3 #C37B33 #33C333

split-complementary

#337BC3 #C33333 #C3C333

monochromatic

#1A3E62 #265C92 #337BC3 #5E9AD5 #8FB8E2

Accessibility & contrast

On white

4.41

#337BC3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#337BC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337BC3

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BC3	#FFFFFF	#000000	##000000
##337BC3	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7FC6

Deuteranopia (green-blind)

#4472C2

Tritanopia (blue-blind)

#008C96

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #337bc3;
/* rgb */ color: rgb(51, 123, 195);
/* oklch */ color: oklch(57.3% 0.132 251.3);

Tailwind

colors: {
  custom: {
    50: '#7da0d5',
    500: '#337bc3',
    950: '#000000',
  },
}

SCSS

$custom: #337bc3;
$custom-light: #7da0d5;
$custom-dark: #000000;

JSON

{
  "hex": "#337bc3",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 195
  },
  "hsl": {
    "h": 210,
    "s": 58.537,
    "l": 48.235
  },
  "oklch": {
    "l": 0.57276,
    "c": 0.13227,
    "h": 251.3
  },
  "luminance": 0.1881
}

Semantic roles & 50–950 ramp

primary

#337BC3

secondary

#CCA986

accent

#9446E2

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #337BC3

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →